Can't find a clear picture of the Twinstar powerset, but the light has a cable with a jack. So no need for cutting cables.. The plug on the power addapter is male the lights has female.. So find another set of fitting jack plugs with cables or screw connector male and female. The jack plug has a universal +/- (Inner is plus/outer is minus) if it has cables it will be red for positive obviously the other for negative. The jack with screw connectors has +/- markings so you can't miss that.
Connect a female plug for the 24 volt addapter with the positive to the V+ and negative to the V- Input connectors
Connect the male plug to the output connectors with the positive to the V+ and the negative to the Ch1 or any other preferd channel for the light.
Measure the diameter of the male jack plug and search for DC power plug in MM measured to find the correct one.
Hi David,Just to update this for completeness. I finally got round to modding the TC420 with this mosfet, for use with the Twinstar 900S.
I bought some 6 amp cable from Maplin and a couple of DC jacks (2.5/5mm). This means that I didn't have to mod the Twinstar cables in any way.
The power from the Twinstar adapter feeds the mosfet power in. I then have a jumper cable coming off the mosfet to the TC420 power.
Soldering the PWM gate on the TC420 to the PWM input on the mosfet was a bit fiddly but ok.
I then attached the mosfet to the roof of the TC420 case with a 'no more nails' strip and closed it back up.
It is working perfectly and, unlike some of the cheap dimmers you can buy for Chichoros style lights, there is no buzzing when dimmed.
I am running a full schedule today and will keep any eye out for heat from the TC420, but I do not expect any problems.
Thanks to zozo for giving me the confidence to try this out!
If anyone else wants to program their Twinstar 900 on the relatively cheap, I'd be happy to answer any questions you have.
I've got a 900s on the way and would love to use the TC421 with it!
Any chance you could knock up a quick diagram on how to do this?
I'm a bit lost with this...
Sorry it has taken me so long to get back to you.
Hi David.. Nice to see it worked all out for you and functions as predicted..
If you or anyone else want to drive other leds that need constant current e.g. 350mA etc. check these out.
The PCB has 3 sense resistors, Default all 3 in place it's a 1,2 amp high power led setup, but take away the according sense resistor it's constant current output respectively changes. So these are rather universaly applicable and are driven via PWN excactly the same way. This way you can drive any constant current led between 6-35 volt on a TC420..
Apologies for noobness in advance. I'm looking for a way to create a daily light cycle, is this achievable with TC420?
If yes, would it work with my light? https://www.amazon.co.uk/dp/B075D9N56X/ref=twister_B075D9V752?_encoding=UTF8&psc=1
How easy is it to set it up?
Wouldn't you need to cut the cord on most lights anyway? Unless they have some kind of transformer?Yes a TC420/21 can be used to create a 24hr light cycle. Unsure if it will work with that light. Looks like you will need to cut the cord of that light to connect the tc420
Wouldn't you need to cut the cord on most lights anyway? Unless they have some kind of transformer?