el_supremo
Well-known member
Someone might find this useful.
I needed to be able to reboot my Teensy++2 without uploading the code.
In order to have the T++2 just reboot, you have to hold the ALE pin high.
I noticed that the +5V pin on the bottom edge of the board (I consider the USB jack to be at the top) is nicely in line with the ALE pin. In order to connect them together I made a jumper from a female 6-pin header by connecting two of the pins together and cutting the rest of them off. Then I soldered a male jumper pin on the top of the board to both ALE and +5V.
When I'm uploading code using the USB port, I put the jumper in one of the two positions which doesn't short the pins. In this position one of the unused pins will have +5V on it which is why I cut all the spare ones off so that I don't have +5V hanging in the air waiting for me to be careless and short it to ground.
When I just need a reboot, I put the jumper in position to short ALE to +5V and then push the reset button.
Here's two photos of it. One shows the jumper beside the T++2 and the other shows the jumper in position for a reboot. Ignore the black wire on the left - that's for a different part of the project. Also ignore my less than stellar soldering job
Pete
I needed to be able to reboot my Teensy++2 without uploading the code.
In order to have the T++2 just reboot, you have to hold the ALE pin high.
I noticed that the +5V pin on the bottom edge of the board (I consider the USB jack to be at the top) is nicely in line with the ALE pin. In order to connect them together I made a jumper from a female 6-pin header by connecting two of the pins together and cutting the rest of them off. Then I soldered a male jumper pin on the top of the board to both ALE and +5V.
When I'm uploading code using the USB port, I put the jumper in one of the two positions which doesn't short the pins. In this position one of the unused pins will have +5V on it which is why I cut all the spare ones off so that I don't have +5V hanging in the air waiting for me to be careless and short it to ground.
When I just need a reboot, I put the jumper in position to short ALE to +5V and then push the reset button.
Here's two photos of it. One shows the jumper beside the T++2 and the other shows the jumper in position for a reboot. Ignore the black wire on the left - that's for a different part of the project. Also ignore my less than stellar soldering job
Pete