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that stupid thing everyone does differently

for the Raspberry PI

smart shutdown attiny stuff, but with an spdt switch, also simple. low part counts, no schnick schnack.

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png

that stupid thing everyone does differently | breadboarding first prototype

2018-10-24 14:14:05

To start with the first prototype I went with breakout boards for the chips, it's a bit botched, but fits. It was a bit tricky to find pin one on the TPS22917, but with the help of Alex I was able to decide on the right pin *hopefully*. On the left side is an HT7333 - I was thinking about using the AP2112K first, but the lower quiescent current of the HT7333 and general current consumption needs of the Attiny brought me to the holtek chip instead. 

https://cdn.hackaday.io/images/5130661540383011988.png