how uploading firmware on a GTM32 pro Vb

[lilieco]

Hello
I have A Geeetech M201 with this control board ( GTM32 pro Vb ) and 1.0.3 firmware and I want to upgrade it with 1.0.5


How must I do ?
Many thanks

[tenacious]

Sorry man, I have the same board and cant make it work. Have you got any problems with the printer. thank you

[lilieco]

problem with Z axis....I tried to modify voltage of A4988 chip.... But I have to buy a new board, because I think I have damaged mine ( my computer doesn't want to see the printer anymore ).... hope it will work with the new one....
But when It will be ok, I'd like to upgrade with 1.0.5... but it seems with hyperterminal there is only 1.0.3 firmware... and the GTM32 pro Vb can only be upgraded with hyperterminal....

[tenacious]

I have the same f.. problem with the Z axis. I think is not only the board, is a bad design. Which board did you buy? I try to upload because I dont know what else can i do and nothing, it is worse now.

[lilieco]

i bought the same : GTM32 pro Vb.... but I had to ask directly from geeetech, because not at sale anywhere...
Try to untight the 4 screw from the piece on the threated rod of Z axis( I found that when it's tight hard, there is problem, and not when it's not )

Sorry for my english.... i'm french

[tenacious]

I am from spain and my english is worse, so dont worry.

i try to upload the firmware i now the computer doesnt recognised it. Just like you. And the printer screen is full of squares.

[lilieco]

try with the software easyprint.... and update firmware.... it will put the 1.0.3....
For the square, power of and power on... Mine does the same....

[franktattoos]

I see you have the same problem as me.
Z motor don't move (i think it's a power problem) and it's impossible to update the firmware.
With Easyprint, it's one Old version of Firmware.

Sorry for my bad English, i'm french

[lilieco]

Moi j'ai eu le soucis au départ avec l'axe Z qui refusait de tourner à certains endroits..... J'ai trouvé que le coupleur 5/8mm etait de biais, et bloquait.... j'ai réglé le soucis en imprimant sur mon autre machine, un coupleur rigide
Mais j'ai du desserrer un peu le pas de vis en laiton, car trop serré, ça bloque toujours.... allez comprendre
Maintenant j'attends de trouver pourquoi j'arrive à faire bouger sur l'axe Z, mais que les axes Y et X refusent de répondre ( pourtant les moteurs fonctionnent, j'ai testé )....
je n'arrive plus non plus à communiquer avec l'imprimante depuis le PC..... le pc reconnait depuis le logiciel, puisqu'il dit connecté, mais il n'y a pas de réponse car elle ne réagit pas aux ordres envoyés....
j'avoue avoir du mal à la mettre en route celle là....

[franktattoos]

Alors je confirme qu'en dévissant un peu les pas de vis en laiton ça va un peu mieux.............
Tout le reste à l'air de fonctionner chez moi, (apparemment hein lol)
Je tente de régler cette histoire de Z et je verrais.

Si je peux t'aider pour le reste....... peut etre un branchement??