I’m working on replacing the Schneider SmartRelay on an Atlas Vista 613 wheelchair lift that I bought for my dad. The Atlas technician agrees that the SmartRelay is probably shot and the replacement is $1,000 wholesale. I built a replacement using an Arduino Nano, a UNL2803A Darlington array, a switching 7805, a bunch of Zener diodes, and a handfull of Schneider industrial relays.

Unfortunately, I let the smoke out of my very last Nano and needed to keep the project moving. So…I took a small piece of protoboard, an Arduino ProMini 168, and some jumper wire and created this Frankenduino. It’s the same pinout as the Nano with none of the nice supporting stuff like an ICP port, USB, voltage regulators, etc. It will keep the development moving while I’m waiting for the 10 Nanos I have on order to arrive.